Comscore Introduces Total Universe Report, Enabling Publishers to Demonstrate Full Range of Site Activity Across Devices and Media Platforms

New Report Accounts for Mobile, App, Tablet and Shared-Use Computer Traffic

RESTON, VA, April 21, 2011 – Comscore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today announced the beta release of the Comscore MMX Total Universe report, which provides audience measurement for 100 percent of a site’s traffic, including usage via mobile phones, apps, tablets and shared computers such as Internet cafes. This never-before-available report, which will be available to Comscore MMX subscribers, will be released with April data in the U.S. and U.K. (with other global markets being released in subsequent months) for all publishers currently leveraging the Comscore Unified Digital Measurement™ (UDM) tag. The initial report features standard Comscore MMX key measures, such as unique visitors, reach, and page views, providing an unduplicated view of site audiences across multiple media platforms.

“We are excited to introduce the Comscore MMX Total Universe report,” said Cameron Meierhoefer, Comscore EVP of Analytics. “With digital media fragmentation occurring at an accelerating pace, it has never been more important for publishers to understand the full size and composition of their audiences and get credit for the traffic they’re generating across all media platforms. This unique report enables publishers to demonstrate the value of their entire audiences and monetize their content irrespective of the access point.”

Publishers who currently leverage the Comscore tag as part of Unified Digital Measurement reporting will be visible in the Total Universe report when April data is released. UDM tagging is required for participation in this report. All publishers who do not currently tag but are interested in participating, please visit http://direct.comscore.com

Clients Support Total Universe Reporting

“Pandora’s audience engages with our service through mobile phones, tablets and other connected devices – often without ever accessing via the traditional web. Third party measurement of the reach and engagement of audiences across all major platforms will help the digital media industry grow advertising revenue and ultimately fuel innovation in cross platform content delivery.”

Heidi Browning, SVP, Strategic Solutions, Pandora

“Mobile media is very quickly evolving from a niche segment of the media landscape to an integral component of the brand advertising campaigns. The Comscore Total Universe report is an exciting development in digital media measurement that enables us to demonstrate the size and scope of our entire audience, whether they’re accessing our content from their mobile phones, iPads or the traditional web.”

Steve Polsky, President & COO, Flixster

“The reality today is that people use more than one screen to enjoy the same service, and advertisers and publishers need ‘one number to rule them all’ – a single measure of total digital audience that includes mobile phones, tablets and other connected devices. We are thrilled to see Comscore lead by providing the first major universal measure of the digital audience that includes mobile.”

Roy Bahat, President, IGN Entertainment

“Consumers have so many different ways of accessing digital content today and it’s important to have a full understanding of these audiences in the increasingly fragmented environment. We look forward to evaluating Comscore Total Universe as we further build our understanding of how our audiences consume content across screens.”

Stuart Schneiderman, Sr. Director, Corporate Digital Research, MTV Networks Digital

“Mobile has evolved from a niche segment of the media landscape to an integral component. The proliferation of smartphones, tablets and other mobile media devices has increased the complexity of digital audience measurement exponentially, so it’s essential to have a full understanding of these audiences in an increasingly fragmented environment. The Comscore Total Universe report represents a significant step for digital media measurement – this is an exciting development that will enable us to demonstrate the size and scope of our entire audience, independent of their access point.”

Camille Norris, Sr. Research Manager, The Huffington Post

About Comscore
Comscore, Inc. (NASDAQ: SCOR) is a global leader in measuring the digital world and preferred source of digital business analytics. For more information, please visit www.comscore.com/companyinfo.

Cautionary Note Regarding Forward-Looking Statements
This release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, including, but not limited to, expectations regarding the impact and benefits to Comscore of the Comscore Total Universe report, financial or otherwise. These statements involve risks and uncertainties that could cause our actual results to differ materially, including, but not limited to: the features and characteristics of the products, the rate of development of the digital marketing intelligence, Internet advertising and e-Commerce markets; the growth of the Internet as a medium for commerce, content, advertising and communications; and the acceptance of new products and methodologies by the industry, including existing and prospective clients.

For a detailed discussion of these and other risk factors, please refer to Comscore's most recent respective Quarterly Reports on Form 10-Q, Annual Reports on Form 10-K and from time to time other filings with the Securities and Exchange Commission (the "SEC"), which are available on the SEC's Web site (http://www.sec.gov).

Stockholders of Comscore are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date such statements are made. Comscore does not undertake any obligation to publicly update any forward-looking statements to reflect events, circumstances or new information after the date of this press release, or to reflect the occurrence of unanticipated events.

Press
Bill Daddi
Daddi Brand Communications
646-370-1341
press@comscore.com